Wired LANs Ethernet
Standard Ethernet
Attachment Unit Interface
Medium-Dependent Interface
Medium Attachment Unit
Physical Layer Signaling
Access Method
-uses 1 persistent CSMA/CD
iEEE Standards
1985, Project 802
Enable intercommunication among equipment
from many manufacturers
Data Link Layer
Logical Link Control
flow control, error control and
part of the framing duties
Media Access Control(MAC)
Operation of CSMA/CD method
and framing
Gigabit Ethernet
1000Base-T
1000Base-CX
1000Base-LX
1000Base-SX
Medium-Dependent Interface (MDI)
PHY Sublayer
Gigabit Medium Independent Interface (GMII)
Reconciliation Sublayer (RS)
Two approached medium access
full-duplex without CSMA/CD
half-duplex using CSMA/CD
Fast Ethernet
100Base-T4
100Base-FX
100Base-TX
uses star topology
autonegotiation, negotiate the mode
or data rate of operation
half duplex with SCMA/CD
compete with other LAN protocols
Fiber Channel
FDDI
Ten-Gigabit Ethernet
MAC Sublayer
operates only in full duplex mode
Physical Layer
Implementation
10GBase-E
-long-wave 1500nm single mode
10GBase-L
-long-wave 1310nm single mode
10GBase-S
-short-wave 850nm multimode
designed for using fiber-optic cable over long distance
